Punching and shearing machine



P. c. PERKINS. Punching and Shearing Machine;

No. 31,674. Patented March 11861.

I [h wen 207 M jj ginc'aww fl UNITED STATES PATENT OFFICE. l

P. G. PERKINS, OF WATERFORD, NEW YORK.

PUNCHING- AND SHEARING MACHINE.

Specification of Letters Patent No. 31,674, dated March 12, 1861.

To all whom it may concern:

Be it known that I, P. G. PERKINS, of Vaterford, in the county of Saratoga and State of New York, have invented a new and Improved Punching and Shearing Machine for Punching and Shearing Metal; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specifica-.

tion, in which Y Figure 1 is a front elevation of my invention. Fig. 2 is a side sectional view of the same, taken in the line 00, m, Fig. 1.

Similar letters of reference indicate corresponding parts in the two figures.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A represents an upright stationary framing in which a rectangular frame B, is placed and allowed to slide freely up and down. The side pieces a, a, of frame B, work through horizontal cross-pieces C, C, of the framing A, said cross-pieces serving as guides and also as bolster plates. The upper part of the frame B, is provided with the vertical bars 5, Z), which pass through the topplate of the framing, and serve as guides.

In the upper part of the framing A, there is placed a horizontal shelf D, on which three eccentrics c, 0, (Z, are secured, the eccentrics c, c, forcing the frame B, downward and the eccentric (Z, moving it upward.

The frame B, has cross-bars e, to which pendent punches f, are attached also shears g, either or both being attached to each cross bar e,see Fig. l.

The cross-pieces C, C, of the framing A, have such a position relatively with the cross-bars e, that the latter will each work up and down over one of the former, and

the cross-pieces C, have holes in them to correspond with the punches in the cross bars 6. The cross-pieces C, have also stationary shears h, attached to correspond with the shears on the cross-bars 6. By this arrangement it will be seen that a variety of punches to suit different kinds of work may be used on the same machine, and also shears of different kinds; and it will also be seen that any one of the punches may be used separately or two or more used simultaneously.

On one end of the shaft D, there is placed a toothed wheel E, into which a pinion 2', on a driving shaft F, gears. To the wheel E, near its periphery a rod Gr, is attached and the lower end of this rod is connected to a frame H, which has eccentrics I, I, at its inner end, said eccentrics acting against an adjustable plate J, which is placed on a bed K, on one of the cross pieces C, of the framing A. The bed K, has one upright bearing piece j, at its outer side between which and the plate J, the metal to be punched is placed.

When the frame B, descends the rod G, is elevated and the eccentrics I, I, act against the plate J, and compress the metal so that as the punch above it descends the metal cannot be expanded laterally by the punch.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The construction of the frame A with a series of bolsters C, and the frame B with a series of cross bars 6 to carry respectively, punches, dies, Stampers or shears, when the above parts are arranged to operate together in the manner herein shown and described.

P. G. PERKINS.

Witnesses J. GRAMER, 2d, PETER HOGAN. 

